FA7622CP Datasheet, PDF (3/8 Pages) Fuji Electric – Bipolar IC For Switching Power Supply Control

FA7622CP(E)
Pulse width modulation circuit section ( FB1, FB2 pin )
Item
Input threshold voltage
Input threshold voltage
Symbol
VTHO
VTHI
Test condition
Duty cycle = 0%
Duty cycle = 100%
Min.
0.8
Typ.
1.6
1.0
Max. Unit
1.8
V
V
Dead time adjustment circuit section ( DT1, DT2 pin )
Item
Input threshold voltage
Input threshold voltage
Standby voltage
Symbol
VTH0
VTH1
VSTR
Test condition
Duty cycle = 0%
Duty cycle = 100%
DT1, DT2 pin open
Min.
0.8
1.8
Typ.
1.6
1.0
Max. Unit
1.8
V
V
V
Overcurrent limiting circuit section
Item
Input threshold voltage
Hysteresis voltage
Input bias current
Delay in OCL
Symbol
VTHOC
VHYOC
IOC
tdoc
Test condition
Overdriving: 50mV
Min.
180
Typ.
210
40
50
120
Max. Unit
240 mV
mV
100
µA
ns
Timer and latch circuit section
Item
Latch-mode threshold voltage
Input bias current
CP pin voltage / LOW
Symbol
VTHCP
IINCP
VSATC
Test condition
VCP = 1.5V, VFB = 0.3V
ICP = 20 µA, VFB = 1.0V
Min.
1.00
Typ.
1.25
Max. Unit
1.50 V
1
µA
300 mV
Output ON/OFF control circuit section
Item
OFF-to-ON threshold voltage
ON-to-OFF threshold voltage
Input bias current
Symbol
VTHON
VTH OFF
IIN
Test condition
VIN = 3V
Min.
0.60
Typ.
180
Max. Unit
3.0
V
V
µA
Undervoltage lock-out circuit section
Item
OFF-to-ON threshold voltage
ON-to-OFF threshold voltage
Voltage hysteresis
Symbol
VCCON
VCCOF
VHYS
Test condition
Min.
2.80
Typ.
3.00
2.90
0.10
Max. Unit
3.20 V
V
V
Output section
Item
Saturation voltage (H level)
Saturation voltage (L level)
Symbol
VSAT+
VSAT–
Test condition
IO = –50mA
IO = 50mA
Min.
Typ.
1.50
1.70
Max. Unit
2.00 V
2.20 V
Voltage step-up circuit section
Item
Output voltage
Symbol
VOUP
Test condition
L=330µH, C=1µF, No load
Min.
10.5
Typ.
12.5
Max. Unit
14.0 V
Overall device
Item
Stand-by supply current
Operating VCC1 current
Operating VCC2 current
Symbol
ICCST
ICC1
ICC2
Test condition
Min. Typ. Max. Unit
Out pin open
0.1
10
µA
Normal operation
3.8
5.5
mA
Normal operation VCC2=12V
OUT1, OUT2 open
Duty cycle=50%
1.5
2.2
mA
3